GREENVILLE, SC - FEBRUARY 13: Republican presidential candidates (L-R) Donald Trump and Sen. Marco Rubio (R-FL) participate in a CBS News GOP Debate February 13, 2016 at the Peace Center in Greenville, South Carolina. Residents of South Carolina will vote for the Republican candidate at the primary on February 20. (Photo by Spencer Platt/Getty Images)

GREENVILLE, SC - FEBRUARY 13: Republican presidential candidate Ohio Governor John Kasich participates in a CBS News GOP Debate February 13, 2016 at the Peace Center in Greenville, South Carolina. Residents of South Carolina will vote for the Republican candidate at the primary on February 20. (Photo by Spencer Platt/Getty Images)

Ben Carson, retired neurosurgeon and 2016 Republican presidential candidate, speaks during the Republican presidential candidate debate sponsored by CBS News and the Republican National Committee at the Peace Center in Greenville, South Carolina, U.S., on Saturday, Feb. 13, 2016. Donald Trump tops the GOP field with support from 36.3 percent of likely South Carolina Republican primary voters with Ted Cruz at 19.6 percent, according to a poll conducted for the Augusta Chronicle released on Friday. Photographer: Daniel Acker/Bloomberg via Getty Images

GREENVILLE, SC - FEBRUARY 13: Republican presidential candidates Ben Carson (R) listens to a TV crew member as Donald Trump (L) smiles during a break of a CBS News GOP Debate February 13, 2016 at the Peace Center in Greenville, South Carolina. Residents of South Carolina will vote for the Republican candidate at the primary on February 20. (Photo by Spencer Platt/Getty Images)

2016 Republican Presidential candidates Donald Trump, president and chief executive of Trump Organization Inc., from left, Senator Marco Rubio, a Republican from Florida, and Ben Carson, retired neurosurgeon, stand on stage at the start of the Republican presidential candidate debate sponsored by CBS News and the Republican National Committee at the Peace Center in Greenville, South Carolina, U.S., on Saturday, Feb. 13, 2016. Donald Trump tops the GOP field with support from 36.3 percent of likely South Carolina Republican primary voters with Ted Cruz at 19.6 percent, according to a poll conducted for the Augusta Chronicle released on Friday. Photographer: Daniel Acker/Bloomberg via Getty Images

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"First of all, I don't know how he knows what I said on Univision because he doesn't speak Spanish," Rubio shot back.

The crowd erupted in noise, preventing Rubio from completing his next sentence. Cruz then started speaking Spanish on the stage to confront Rubio's claim. Rubio continued his answer by accusing Cruz of having a "disturbing pattern" of lies.

"For a number of weeks, Ted Cruz has just been telling lies," Rubio said. "He's lying about all sorts of things. And now he makes things up. The bottom line is this is a campaign and people are watching. ... Here's the truth: Ted Cruz supported legalizing people that wre in this country illegally."